Former Slipknot star Joey Jordison is facing fresh troubles after parting ways with the lead singer of his side project band.

The drummer has been concentrating on his group Scar The Martyr since he was dismissed from Slipknot last year (13), but the project has now been rocked by the departure of vocalist Henry Derek Bonner.

The singer blamed his departure on "personal differences, artistic direction and a slew of business decisions that I cannot simply ignore," adding, "I've given it a year of my life and now it's time to move on".

Jordison adds, "Scar The Martyr has parted ways with Henry, not the other way around. With all that's been going on of late, we have been forced to take a very careful look at how we are moving forward, and with there being some creative and personal differences, it made sense to move on without Henry."